Apparatus for forming paper tubing



Au 25, 1936. J. M. SMITH 2,

APPARATUS FOR FORMING PAPER TUBING Filed Dec. 9, 1935 4 Sheets-Sheet 1 James M Emil]:

Aug. 25, 1936. J. M. SMITH 2,052,494

APPARATUS FOR FORMING PAPER TUBING Filed Dec. 9, 1935 4 Sheets-Sheet 2 Aug. 25, 1936. J. M. SMITH APPARATUS FOR FORMING PAPER 'TUBING Filed Dec. 9, 1935 4 Sheets-Sheet 3 James M 52717]? Aug. 25, 1936. J. M. SMITH 2,052,494

APPARATUS FOR FORMING PAPER TUBING Filed Dec. 9, 1935 4 Sheets-Sheet 4 grwcwkyn James M 557%]? Patented Aug. 25, 1936 PATENT OFFICE y 2.05am I arraaa'rus roa roams rarna runme James M. Smith, Shelbyville, Ind., assignor to I The Kennedy Car Liner at Bag (3o. Shelbyville, Ind.

Application December 9, 1935, Serial No. 53,638

3 Claims.

This invention relates to an apparatus for manufacturing paper tubing in any desired lengths, and for measuring and separating any desired length of tubing into any number of smaller tubes of equal length.

The apparatus for carrying out the invention comprises a framework for rotatably supporting two laterally adjustable rolls of paper of equal width; along with mechanism for applying adhesive to the projecting edges of the paper forming the plies of the tubing.

The apparatus aforesaid also includes a measuring reel for drawing the tubing through the folding and pasting mechanism, whereby any desired length of tubing may be measured on the reel itself; and whereby any desired numbers of plies of the finished tubing may be wound on the reel and then cut or subdivided into smaller tubes of a predetermined length while mounted on the reel itself.

Other objects of the invention will become apparent as the detailed description thereof proceeds.

In the drawings:

Figure 1 is a vertical section taken on the line I--I of Figure 2;

Figure 2 is a plan view of the apparatus embodying this invention, and illustrated in vertical section in Figure 1;

Figure 3 is a fragmentary vertical section to an enlarged scale, taken on the line 3-3 of Figure 2;

Figure 4 is a fragmentary vertical section to an enlarged scale, taken on the line 4-4 of Figure 2;

Figure 5 is a fragmentary perspective illustrating details of the apparatus designed to turn one edge of 9. ply of paper over the edge of a superposed ply;

. Figure 6 is a vertical transverse section taken on the line 6-6 of Figure 3;

Figure 7 is a fragmentary perspective to an enlarged scale, illustrating mechanism for turning one edge of an upper layer of paper under the edge of the lower ply;

Figure 8 is a fragmentary vertical section taken on the line 8-8 of Figure 4;

Figure 9 is a vertical transverse section taken on the line 9-9 of Figure 1;

Figure 10 is a vertical transverse section taken on the line III-I of Figure 4;

Figure 11 is a vertical transverse section taken on the line II-II of Figure 3; and

Figure 12 is a fragmentary detail of .a brake for retarding the rotation of the shafts supporting the paper rolls.

Referring to the drawings, in which similar parts are designated by like numerals:

The reference numerals I3 and I4 designate parallel runners which form the main supports for the various shafts and other mechanism constituting this invention. These runners are supported at their opposite ends upon the cross members I and IS. The paper rolls I1 and I8 are mounted on shafts l9 and 20, respectively. The shaft I9 is provided with a pair of flanges 2| and 22, spaced apart at a distance equal to the width of the bearing block 23, which is suitably supported on the upper edge of the runner The flanges 2I and 22 engage the opposite side of the bearing block 23 to prevent axial movement of the shaft I9 with respect to the runners I3 and I4. A flange 24 is formed on the shaft I9 at a suitable distance from the flange 2| and forms a stop for the roll of paper II. This flange 24 may be in the form of a collar adjustable lengthwise of the shaft I9, and adapted to be locked in position thereon by means of a set-screw 25. The shaft I9 from the collar 24 is free of obstruction in order to adapt the shaft to receive rolls of paper of different widths; and the free end of the shaft is mounted to rotate in a bearing block 26 suitably secured to the upper edge of the runner I3.

The shaft 20 is substantially the same as the shaft I9 and is mounted to rotate in bearing blocks 21 and 28,'suitably secured to the upper edges of the runners I3 and I4, respectively.

,Flanges 29 and 3|] cooperate with the opposite sides of the bearing block 28 to prevent axial movement of the shaft 20 with respect to the runners I3 and I4. A collar 3| adjustable on the shaft 20 and adapted to be locked in adjusted position by means of the set-screw 32 is used to position the roll I 8 with respect to the roll 20 for the purpose of determining the width of the overlap of the opposite edges of the said rolls I1 and I8. In order to prevent continued rotation of the shafts I9 and 20 in the event of a break in the tube under construction, each of the said shafts is retarded by means of a belt 33 (see Figure 12) one end of which is suitably secured to a side of the runner I4. The belt is provided at its free end with a weight 34, and extends over the shaft I9, or 20 as the case may be, and operates to slow down rotation of said shaft to prevent overrunning thereof.

Guide rollers 35 and 36 for the upper ply of paper 31 are mounted to rotate in standards 33, 39, 40 and 4i, which extend up from the runners l3 and I4. Guide rollers 42 and 43 are suitably journaled for rotation in the runners I3 and I4 and below the upper edges thereof, to receive the ply 44 of paper from the roll l1. Idler rollers 45 and 46 are mounted for rotation in brackets secured to the lower edges of the runners l3 and I4 to direct the ply 44 clear of intervening mechanism onto the roller 43.

The plys of paper I! and 44 extend around the rollers 36 and 42, respectively, and are brought into contact (see Figure 4) between plates 41 and 48 extending lengthwise of the machine. The plate 48 is suitably secured intermediate its ends to a cross bar 49, which in turn is suitably secured to an angle iron 50, the opposite ends of which are fixed to the upper edges of the runners l3 and I4. Part of the plate 48 extending rearwardly of the cross bar 49 is bent at an angle to the horizontal part thereof in order to form a guide for the ply 44 of the paper tube. This part, designated by the reference numeral 5|, is further curved at its lower edge to form an arcuate guide surface for the ply 44.

The upper plate 41 extends over and parallel to the plate 48, and is curved upwardly at its forward end to rest upon and be clamped to the horizontal flange of an angle iron 52. The angle iron 52 is supported above the runner l3 by means of screwthreaded standards 53 and 54, extending through clamping plates 55 and it. The standards are provided with nuts l1, I8, 59, and '0 adjustable to force the plates 55 and it into clamping engagement with the angle iron 52, a square block I being arranged in the angle between the flanges of the angle iron 52 and the lower plate 56 to prevent turning of the angle iron from proper position.

Above the runner N, the other end of the angle iron 52 is supported by screwthreaded standards 42 and 43 on clamping plates similar in every respect to the clamping plate arrangement illustrated in Figures 3 and 4. The upper plate 41 is detachably secured to the angle iron 52 by means 01' the clamp 84. It will be noted that the angle iron 52 may be adjusted transversely of the machine and between the clamping plates on the screwthreaded standards. In this case the plate 41 must be brought back into position over the plate 4|, and this can be done only by providing some sort of detachable clamping means, such as the clamp 84.

In order to turn the edge of the upper ply 31 around the edge of the lower ply 44, a suitably shaped rod 05 of spring material is secured -to the angle iron ll. The upper part of the spring OI extends diagonally across and under the plate 48. This upper part 40 holds the turned under part 41 of the ply 31 against the lower face of the plate 44. When the ply 31 and ply 44, in contact with each other, emerge from contact with the plate 40 and spring 61, they pass together under a cross bar 83 which is suitably secured at its upper edge to the vertical flange of the angle iron II.

As shown in Figure 4 of the drawings, the plies 31 and 44 with the turned under edge 81 are drawn under the lower edge of the cross bar 08. From the cross bar 64 the plies of paper forming the tube are drawn over a roller 69 rotatably mounted on standards extending upwardly from the runners i3 and I4. The finished tube is drawn through the apparatus just described by means of the adjustable reel I0, mounted to rotate in standards H and I2, suitably secured to the floor or platform adjacent the tube-forming mechanism. The reel may be driven by any suitable source of power (not shown herein).

The reel comprises a shaft 13 mounted for 5 rotation in the standards 'II and I2. At opposite ends of the shaft 14 the slotted radial arms 14 extend, and are each provided with scales extending along the slot to facilitate the adjustment of the cross bars 15 which form the supporting bars for the finished paper tube. The opposite ends of each of the bars II are screw threaded to receive wing nuts 18 for the purpose of securing said cross bars in adjusted position in the slots 11 of the radial bar. 15

The reel 10 forms in eflect a measuring device for determining the lengthof the separate tubes into which the longer tube may be divided. For example, if all the cross bars I! be adjusted to the same distance in their respective radial bars 20 relative to the shaft 13, a complete rotation of the reel will determine the length of the tube wound thereon. In the operation of the machine it is customary to wind any desired number of layers of tubing on the reel, and then cut through 25 all the layers along one of the cross bars to divide the tubing into any desired number of shorter lengths.

So far the description has taken care of the turning of one edge of the upper layer 31 around 30 the adjacent edge of the lower layer 44. It will be apparent from an inspection of Figure 2 of the drawings that the roll IT has been displaced axially with respect to the roll I! in order to provide the turned under portion 81 of the upper 35 layer 31.

Where the rolls are of the same width, the lateral displacement of the roll H with respect to the roll I. also provides the overlap for the other edge of the ply 31. Figure 4 of the drawings shows the mechanism for turning the edge of the ply 31 over the adjacent edge of the ply 44, while Figure 3 illustrates the mechanism for turning the edge of the lower ply 44 over the adjacent edge of the upper ply 31. The superposed plies 31 and 44 pass over the upper edge of the cross bar 48 and under the horizontal flange 18 of an angle plate suitably secured to the vertical flange of the angle iron 52. It will be noted from Figure 3 of the drawings that the lower edge of the cross bar 08 is out of contact with the paper tube at that part thereof where the ply 44 projects beyond the edge of the ply 31.

The projecting part of the ply 44 is turned over the adjacent edge of the upper ply 31 by 55 means of the mechanism illustrated particularly in Figures 5 and 6. In these figures the rear face of the vertical flange of the angle iron I! is shown as supporting a plate It which extends downwardly to contact with the upper face ofthe upper ply 31. The plate I9 is then bent upwardly at an angle to direct the tubing onto the roller 69. The plies 31 and 44 are held in contact with each other during this movement toward the roller 03 by means of a plate 30, which-g5 for the greater part of its length is parallel with the upwardly inclined part ll of the plate IS.

The lower end of the plate III is curved downwardly to rest against the vertical flange of an angle iron I! which extends across the runners i3 70 and i4 and is suitably secured thereto at its opposite end. Since this plate 30 may require adjustment lengthwise of the angle iron 42, its connection with the vertical flange of the angle iron must be capable of adjustment. Therefore, a 76 iv an clamp 83 is used to connect the plate II) detachably and adjustably to the vertical flange of the angle iron 82.

The pasted projecting edge 84 of the lower ply 44 is turned over the plate 8| by means of the springy rod 85 suitably shaped and secured to the flange of the angle iron 52 to perform this function. As the superposed layers or plies 31 and 44 emerge from the space between the plates 80 and ill, the edge 61 sof the upper ply 31 has been turned under the adjacent edge of the lower ply 44, and the other edge of the ply 44 has been turned over the adjacent edge of the upper ply 31. The final pressure for causing these turned edges to adhere to the adjacent plies is effected by the passage of the tubing over the roller 69.

As shown in Figure 9 of the drawings, the adhesive for the tubing is provided by means of containers 86 and 81 which are suitably supported by angle irons 8B .and 89, extending between the runners l3 and I4. The container 81 is provided with a disc 90 rotatably mounted on the upper edge of the container and dipping into the adhesive 9| in the container 31. The edge of the disc 90 is maintained in contact with the roll 38, or rather the ply 31 coming from the roll I8. The adhesive 92 from the container 86 is applied to the projecting edge of the ply 44 by means of a. disc 93-rotatably mounted on the upper edges of the container 86, and dipping into the said adhesive 92. This arrangement is fully shown in Figure 9 of the drawings and its operation will be obvious from inspection thereof.

Numerous variations may doubtless be devised by persons skilled in the art without departing from the principles of my invention. desire no limitations to be imposed on my invention, except such as are indicated in the appended claims.

What I claim is: I

1. In a paper tube making machine, a supporting frame, a pair of shafts mounted to rotate about parallel axes on said frame, stops adjustable axially on said shafts and adapted to position rolls of paper substantially of equal width relatively on said shafts to provide overlapping edges, means for moving the sheets of paper I, therefore,

along said frame from said rolls in superposed relation to each other, and means for lapping and securing one edge of each sheet around the adjacent edge of the other sheet during their movement along the frame.

2. In. a paper tube making machine, a supporting frame, a pair of shafts spaced apart and mounted to rotate about parallel axes on said frame, stops adjustable axially on said shafts, and adapted to position rolls of paper of substantially equal widths relatively displaced on said shafts to provide one edge of each roll overhanging the edge of the other roll, means for moving the sheets of paper along said frame from said rolls in superposed relation to each other, means for applying adhesive to the overhanging parts of said sheets during the movement thereof along said frame, means for turning the overhanging edge of each sheet around the'adjacent edge or the other sheet after the application of adhesive, and means for pressing the overturned edge of each sheet against the obverse face of the other sheet.

3. In a paper tube making machine, a supporting frame, a. pair of shafts spaced apart and mounted to rotate about parallel axes on said frame, stops adjustable axially on said shafts, and adapted to position rolls of paper of substantially equal widths relatively displaced on said shafts to provide one edge of each roll overhanging the edge of the other roll, means for moving the sheets of paper along said frame from said rolls in superposed relation to each other, means for applying adhesive to the overhanging parts of said sheets during the movement thereof along said frame, means for turning the overhanging edge of each sheet around the adjacent edge of the other sheet after the application of adhesive, means for pressing the overturned edge of each sheet against the obverse face of the'other sheet, said turning means comprising a pair of plates spaced apart parallel to each other to receive and press between them the superposed sheets, and means in contact with one of said plates for turning the overhanging edge of one of said sheets around the adjacent edge of the other sheet.

JAMES M. SMITH. 

